Concrete-mixer.



L.C.HAMEL.- CONCRETE MIXER. APPLICATION FILED JULY 19. 191-6- PatentedApr. 24, 1917.

2 SHEETS-SHEET l- L. C. HAMEL.

I CONCRETE MIXER.

APPLICATION FILED JULY I9, 19m

. Patented Apr. 24, 1917.

2 SHEETS-SHEET 2.

61cm neg machine to take the LOUIS C. HAMEL, OF APPLETON, WISCONSIN.

CONCRETE-MIXER.

Specification of Letters Patent.

Patented Apr. 24,1917.

Application filed July v1e, 1916. Serial No. 110,100.

To all whom it may concern: I

Be it known that I, LOUIS citizen of the United States, pleton, in thecounty of Outagamie and State of Wisconsin, have invented certain newand useful Improvements in Concrete- Mixers, of which the following is aspecification.

This invention relates to concrete mixers of the portable type, and itsobject is to provide a simple and eflicient hand-operated place of thewheelbarrow and the small batch mixer, so-that the materials may betaken from the piles where theyare dumped by the wagons, and mixed anddischarged directly into the forms.

he machine consists of a mixing drum mounted on a two-Wheeled truck orbarrow, and sosupported that the concrete may be easily mixed, andcarried to the forms and dumped thereinto.

In order that the invention may be better understood, reference is badto the acc0mpanying drawings forming a part of-this specification, inwhich the preferred embodiment of the invention is shown, it beingunderstood that various changes and modifications in the structuraldetails may be made without departure from the spirit and scope of theinvention as claimed hereinafter.

In the drawings- Figure 1 is a plan view of the apparatus, lookingin thedirection of the arrow in Fig. 2; Fig. 2 is a central longitudinalsection of the apparatus; Fig. 3 is a cross-sect1on of the mixing drum;Fig. 4 is a perspective View of a detail portion of the device; Fig. 5is a sectional detail on the line 55 of Fig. 2, and Fi 6 ,an elevationof the parts shown in ig. 5.

C. Ham, a residing at Ap- Referring specifically to the drawings, 10

denotes a mixing drum which is preferably octagonal in cross-section,and opens at one end to receive and discharge the material,

this end being also reduced. To the other end of the drum is fixed abearing in the form of an elongated sleeve or tube 11 threaded at eachend. One end of the sleeve passes through the rear end wall of the drumand through disks 12 located on. the inside and the outside thereof, andon this end of the sleeve are screwed nuts 13, which latter, when theyare tightened up against the dlSkS, fasten the sleeve securely to thedrum. The other end of the sleeve extends for a short distance into thedrum and is The mixing drum 1O iscarried by a twowheeled truck orbarrow, the frame of which comprises laterally spaced-side sections between which the drum 1s located. f'Each side section of the framecomprises a top bar 17 and a bottom bar 18 which are connected at theirforward ends by a curved bend 19. At its rear end the bottom bar 18 hasan upward bond 20 to the corresponding end of the top bar 17. This framemember is in one piece and is composed of channel steel suitably bent tothe shape shown. The upper end of the rear portion 20-of the framemember is bent rearward parallel to the rear end of the top bar 17,beneath the same and in contact therewith, as shown at 21, the channelof the bar 17 being at the top and the channel of the part 21 at thebottom, so that these parts may be placed back to back. The side framesection also has a brace consisting of a channel bar-22 extending alongand secured to the rear bar 20 and having at its upper end a forwardbend 23 to the bottom of the top bar 17, and then a downward and forwardbend 24 to the bottom bar 18, to which latter it is bolted or otherwisefastened. I y

The bottom bars 18 of the respective sides of the machine supportt-heaxle 25 of the wheels 26, said axle also providing a crossco ectionbetween the sides of the truck.

he frame bars of the respective sides of the truck alsohavecross-connections whereby the sides are secured in laterally spacedrelation. One of these connections is adjacent to the forward ends ofthe top bars 17 the same being a channel bar 27 placed so that itschannel is at the bottom and seating at its ends on the top bars. In thechannels of the top bars seat blocks 28 having a transverse lug 29 ontop seating in the channel of, the bar 27. Bolts passing through thebars 27, the parts 28 and 29, and the bars 17 complete the fastening ofthe crox-connection. The parts 28 and 29 are castings, and made in onepiece.

The channels of the rear ends of the top V placed bars 17 and the parts21 are providedwith fillers and said ends serve as handles for operatingthe truck.

ing the fastening. This connection is the same as the one at the forwardends of the top bars 17.

Midway between their ends, bars 31 carry a block 35 which supports theshaft 15, the latter passing through a hole in the block and being madefast by'a set screw 36. The channels of the bars 31 face each other andthe block 35 has reduced end portions 3i seating therein. The shaft 15also passes through the bars 31 and thus serves to hold the block 35fixed therebetween.

At the forward, or discharge end of the drum 10 is a suitable. handle 38for rotating the same to mix the material.

The drum 10 is located above the axle 25, and it extends on oppositesides thereof in the direction of the length of the truck. It willtherefore be seen that the drum can be readily emptied by merelyswinging the rear end of the truck frame upward, whereby it tilts aboutthe axle 25, and its forward end and the corresponding end of the drumtilt downward, and the ,material is discharged.

In operation, the material to be mlxed is thrown into the drum 10 andthe latter is rotated to mix the same, after which the truck is wheeledto the forms and the material is dumped thereinto, after which the truckis wheeled back to the place where the the channel :material is piledand the drum is filled for the next batch. When the drum is beingfilled, and also when it is rotated to mix the material, the rear end ofthe truck frame is allowed to swing down until the, lower ends of theframe parts 20 rest on the round, as shown in Fig. 2, the samethereoreserving as a prop and holding the truck stationary, and the drumin this position of the truck frame is held inclineddownward andrearward to prevent-the material from working out of the forward ordischarge end.

I claim 1. A concrete mixer comprising a rotatable mixing drum,'awheeled su port for the drum, said support being tilta le about itsaxle, and the drum extending in the direction of the length of thesupport, a shaft supporting the drum, a prop on the support behind theaxle for limiting the downward tilt of the rear end of the support, and

'a support for the drum shaft carried by the prop.

2. A concrete mixer comprising a rotatable mixing drum, a wheeledsupport for the drum, said support being tiltable about its axle, andthe drum extending in the direction of the length of the support, ashaft supporting the drum, a prop on the support behind the axle forlimiting the downward tilt of the rear end of the support, said propcomprising laterally spaced side members, a cross-connectio betweensaid; members and consisting of spaced channel bars having theirchannels facing, a block mounted between said bars and seating at itsends in the channels thereof, and a shaft support-.

ing the drum and passing through the channel bars and theblocktherebetween.

In testimony whereof I afiix my signature in the presenceof twowitnesses.

LOUIS C. HAMEL. Witnesses:

Emmn COLE, .Mrs. E. J. COLE.

